cloud-fan commented on issue #26881: [SPARK-30252][SQL] Disallow negative scale of Decimal URL: https://github.com/apache/spark/pull/26881#issuecomment-575609647 ``` File "/home/jenkins/workspace/SparkPullRequestBuilder@2/python/pyspark/sql/types.py", line 871, in __main__._parse_datatype_json_string Failed example: check_datatype(DecimalType(1,-1)) Exception raised: Traceback (most recent call last): File "/usr/lib64/pypy-2.5.1/lib-python/2.7/doctest.py", line 1315, in __run compileflags, 1) in test.globs File "<doctest __main__._parse_datatype_json_string[15]>", line 1, in <module> check_datatype(DecimalType(1,-1)) File "<doctest __main__._parse_datatype_json_string[1]>", line 4, in check_datatype scala_datatype = spark._jsparkSession.parseDataType(datatype.json()) File "/home/jenkins/workspace/SparkPullRequestBuilder@2/python/lib/py4j-0.10.8.1-src.zip/py4j/java_gateway.py", line 1286, in __call__ answer, self.gateway_client, self.target_id, self.name) File "/home/jenkins/workspace/SparkPullRequestBuilder@2/python/pyspark/sql/utils.py", line 102, in deco raise converted AnalysisException: Negative scale is not allowed: -1. You can use spark.sql.legacy.allowNegativeScaleOfDecimal.enabled=true to enable legacy mode to allow it.; ********************************************************************** 1 of 16 in __main__._parse_datatype_json_string ***Test Failed*** 1 failures. ```
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